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Capt Bob
 
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930 4 speed - 3rd gear

I have been having some trouble with 3rd gear...If I am rapidly shifting from 2nd to 3rd the gears will grind. If I shift slowly into 3rd no problem. No problem getting into reverse or any other gear. I have recently changed the gear oil, fresh Swepco 201, adjusted the clutch, and installed a Stomski coupling with no noticeable change when rapidly shifting into 3rd.

Any recommendations for this 930 4-speed with 85,000 miles?
Old 11-03-2017, 09:50 AM
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new 3rd gear syncro.

all that speed shifting does not do them any good. (not saying you but I have seen people flat out abuse them)
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ [__] RUNNING: [__] NOT RUNNING:
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[] RUNNING:[_] NOT RUNNING:__2000 MER E320 WAGON [_] WRECKED:[]RUNNING:
Old 11-03-2017, 10:11 AM
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Itís a one Mississippi 2-3 shift for me or I get a ďreminderĒ.
Old 11-03-2017, 11:31 AM
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my 77 had a very bad 2-3 syncro. had to shift very very slow. was like that when I bought and when I sold it. never got any worse but then I try to take care of my tranny and shift easily.
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ [__] RUNNING: [__] NOT RUNNING:
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[] RUNNING:[_] NOT RUNNING:__2000 MER E320 WAGON [_] WRECKED:[]RUNNING:
Old 11-03-2017, 11:34 AM
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Capt Bob
 
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Thanks guys...yes its a 'one Mississippi into 3rd' and I'm good to go. Still getting used to the short sifter kit in this car.
Old 11-03-2017, 11:44 AM
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Capt Mine is a "Mississippi ++" and then shift. It annoys me so much that my Trans is now out getting rebuilt! I want the right, at least mechanically. But swapping gears and changing a clutch the bill is starting to add up.
Old 11-05-2017, 05:08 AM
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Capt Bob
 
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I went out for a drive last night and did the Mississippi ++ and the car shifted perfectly...no "reminders"! I'm sure at some point when its time for a clutch I will also have the gear box rebuilt as well.

Was third gear the problem child that pushed you to get the transmission rebuilt?
Old 11-07-2017, 05:42 AM
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Quote:
Originally Posted by Capt Bob View Post
Was third gear the problem child that pushed you to get the transmission rebuilt?
Yes, it slowly got worse until it always ground....
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Old 11-07-2017, 07:01 AM
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Time for a new synchro on your 3rd. Iíve destroyed mine three times now in about 125 track days. Only solution is to slow down your shifts. Count 1, 2 and youíll be fine.


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Old 11-07-2017, 05:12 PM
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Quote:
Originally Posted by T77911S View Post
. . . but then I try to take care of my tranny . . .
???

!!!

Old 11-07-2017, 11:45 PM
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Count $'s 1-2-3. Short shifters area a waste of $s as far as I am concerned. The g/boxes just don't handle it. Mine is only used for track and I don't have a short shifter. No point and no gain. Just more g/box rebuilds. I don't know why some transmissions are good for short quick shifts and others not. But the 915 box and 930 are not. 2nd and 3rd take the most punishment.
Alan
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Old 11-08-2017, 12:27 AM
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Capt Bob
 
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The short shifter on my 930 was installed by the previous owner. I have had the car for (6) months now and really enjoy it, especially now that it is getting cooler in Florida. I'm not going to race the car, so for now slow shift is fine.
Old 11-08-2017, 09:49 AM
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Quote:
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???

!!!

its funny, I always think about you when I talk about my tranny. I don't know why
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ [__] RUNNING: [__] NOT RUNNING:
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[] RUNNING:[_] NOT RUNNING:__2000 MER E320 WAGON [_] WRECKED:[]RUNNING:
Old 11-09-2017, 04:23 AM
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Quote:
Originally Posted by Alan L View Post
Count $'s 1-2-3. Short shifters area a waste of $s as far as I am concerned. The g/boxes just don't handle it. Mine is only used for track and I don't have a short shifter. No point and no gain. Just more g/box rebuilds. I don't know why some transmissions are good for short quick shifts and others not. But the 915 box and 930 are not. 2nd and 3rd take the most punishment.
Alan
Iíll expand that to a fairly universal statement. We can always shift faster than the synchros work. We donít need help.

That said, I know many people who find it far more comfortable. The driver ergonomic are improved. I personally donít use them.
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Old 11-09-2017, 05:05 AM
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